Earlier quoted context omitted.
That's true - and another reason to go with Mac. On my Mac I can test Mac versions of Safari, Firefox, and Opera. I can also have virtual machines to test for Windows Firefox, IE6, IE7, and IE8 at the same time. If I were on a PC I would only be able to have one version of IE installed. It's still funny to me that to develop websites that work on all of the Windows browsers a Mac is the only thing that makes sense.
"If I were on a PC I would only be able to have one version of IE installed." That's not true. You can have virtual machines to test multiple versions of IE, too.
http://www.microsoft.com/downloads/details.aspx?FamilyID=8e6...